A development environment definition is a critical input to all of these tasks.
开发环境定义对所有这些任务来说都是一个关键性的收入。
They don't increase accessible input with the help of target language environment;
未能充分利用有利语言环境增加可懂输入量；
They don't increase accessible input with the help of target language environment;
未能充分利用有利语言环境增加可懂输入量；
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